121004135351 has 4 divisors (see below), whose sum is σ = 132004511304. Its totient is φ = 110003759400.

The previous prime is 121004135333. The next prime is 121004135383. The reversal of 121004135351 is 153531400121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 153531400121 = 11 ⋅13957400011.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121004135351 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121004135351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121004135311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5500187960 + ... + 5500187981.

It is an arithmetic number, because the mean of its divisors is an integer number (33001127826).

Almost surely, 2^121004135351 is an apocalyptic number.

121004135351 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121004135351 is a deficient number, since it is larger than the sum of its proper divisors (11000375953).

121004135351 is a wasteful number, since it uses less digits than its factorization.

121004135351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11000375952.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 121004135351 its reverse (153531400121), we get a palindrome (274535535472).

The spelling of 121004135351 in words is "one hundred twenty-one billion, four million, one hundred thirty-five thousand, three hundred fifty-one".